Rails 呈现不同动作的方式基于用户类型的视图? [英] Rails way to render different actions & views based on user type?

问题描述

我有几种不同的用户类型(买家、卖家、管理员).

I have a couple different user types (buyers, sellers, admins).

我希望它们都具有相同的 account_path URL，但使用不同的操作和视图.

I'd like them all to have the same account_path URL, but to use a different action and view.

我正在尝试这样的事情...

I'm trying something like this...

class AccountsController < ApplicationController
  before_filter :render_by_user, :only => [:show]

  def show
   # see *_show below
  end

  def admin_show
    ...
  end

  def buyer_show
    ...
  end

  def client_show
    ...
  end
end

这就是我在 ApplicationController 中定义 render_by_user 的方式...

This is how I defined render_by_user in ApplicationController...

  def render_by_user
    action = "#{current_user.class.to_s.downcase}_#{action_name}"
    if self.respond_to?(action) 
      instance_variable_set("@#{current_user.class.to_s.downcase}", current_user) # e.g. set @model to current_user
      self.send(action)
    else
      flash[:error] ||= "You're not authorized to do that."
      redirect_to root_path
    end
  end

它在控制器中调用正确的 *_show 方法.但仍然尝试呈现show.html.erb"并且没有寻找我在其中名为admin_show.html.erb"buyer_show.html.erb"等的正确模板.

It calls the correct *_show method in the controller. But still tries to render "show.html.erb" and doesn't look for the correct template I have in there named "admin_show.html.erb" "buyer_show.html.erb" etc.

我知道我可以在每个操作中手动调用 render "admin_show" 但我认为在 before 过滤器中可能有一种更简洁的方法来完成这一切.

I know I can just manually call render "admin_show" in each action but I thought there might be a cleaner way to do this all in the before filter.

或者有没有其他人看到过插件或更优雅的方式来分解动作&按用户类型查看?谢谢！

Or has anyone else seen a plugin or more elegant way to break up actions & views by user type? Thanks!

顺便说一句，我使用的是 Rails 3(以防万一).

Btw, I'm using Rails 3 (in case it makes a difference).

推荐答案

根据视图模板的不同，将某些逻辑移到 show 模板中并执行以下操作可能会有所帮助那里的切换:

Depending on how different the view templates are, it might be beneficial to move some of this logic into the show template instead and do the switching there:

<% if current_user.is_a? Admin %>
<h1> Show Admin Stuff! </h1>
<% end %>

但是要回答您的问题，您需要指定要呈现的模板.如果您设置了控制器的 @action_name，这应该可以工作.您可以在 render_by_user 方法中执行此操作，而不是使用本地 action 变量:

But to answer your question, you need to specify which template to render. This should work if you set up your controller's @action_name. You could do this in your render_by_user method instead of using a local action variable:

def render_by_user
  self.action_name = "#{current_user.class.to_s.downcase}_#{self.action_name}"
  if self.respond_to?(self.action_name) 
    instance_variable_set("@#{current_user.class.to_s.downcase}", current_user) # e.g. set @model to current_user
    self.send(self.action_name)
  else
    flash[:error] ||= "You're not authorized to do that."
    redirect_to root_path
  end
end

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